enum ProjectionCandidate<'tcx> {
    ParamEnv(PolyProjectionPredicate<'tcx>),
    TraitDef(PolyProjectionPredicate<'tcx>),
    Object(PolyProjectionPredicate<'tcx>),
    Select(Selection<'tcx>),
}

Variants§

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ParamEnv(PolyProjectionPredicate<'tcx>)

From a where-clause in the env or object type

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TraitDef(PolyProjectionPredicate<'tcx>)

From the definition of Trait when you have something like <<A as Trait>::B as Trait2>::C.

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Object(PolyProjectionPredicate<'tcx>)

Bounds specified on an object type

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Select(Selection<'tcx>)

From an “impl” (or a “pseudo-impl” returned by select)

Trait Implementations§

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impl<'tcx> Debug for ProjectionCandidate<'tcx>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'tcx> PartialEq<ProjectionCandidate<'tcx>> for ProjectionCandidate<'tcx>

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fn eq(&self, other: &ProjectionCandidate<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'tcx> Eq for ProjectionCandidate<'tcx>

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impl<'tcx> StructuralEq for ProjectionCandidate<'tcx>

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impl<'tcx> StructuralPartialEq for ProjectionCandidate<'tcx>

Auto Trait Implementations§

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impl<'tcx> !RefUnwindSafe for ProjectionCandidate<'tcx>

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impl<'tcx> !Send for ProjectionCandidate<'tcx>

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impl<'tcx> !Sync for ProjectionCandidate<'tcx>

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impl<'tcx> Unpin for ProjectionCandidate<'tcx>

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impl<'tcx> !UnwindSafe for ProjectionCandidate<'tcx>

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 48 bytes

Size for each variant:

  • ParamEnv: 40 bytes
  • TraitDef: 40 bytes
  • Object: 40 bytes
  • Select: 48 bytes